Pressure device



Jan. 12, 1937. w. H. NUTT PRESSURE DEVICE 2 SheetsSheet 1' Filed March23, 1935 Fan. 12, 1937. w, -r 2,067,280

PRESSURE DEVICE Filed March 23, 1955 2 Sheets-Sheet 2 I WVE/VTURPatented Jan. 12, 1937 A'lET OF PRESSURE DEVICE Application March 23,1935, Serial No. 12,648

2% Claims.

This invention relates to devices by which pressure may be applied toportions of shoes to perfect their form between other steps in theirmanufacture, it being particularly adapted for operation on shoe-shanks.

In the production of shoes, of which those of the tum-type furnish anexample, it may be desirable, as a preliminary to relasting or otheroperations, to force the shank-portion of a shoe into intimate contactwith the last which it contains, this, at the same time, urging the edgeof the upper-material toward the position in which it is to betemporarily secured to the last. My invention has as an object theefiective application of such pressure by a relatively inexpensivedevice, convenient for use by the operator. For the attainment of thisobject, I furnish, in novel combination, a carrier, which may be ayoke-like member, having movable upon it pressure means, as a slide,provided with a shoe-bottom-engaging member normally spaced from thebottom of a shoe supported upon the carrier and actuated by a leverhaving its fulcrum mounted upon said carrier. This lever, when moved bythe operator, will press the engaging member against the shoebottom. Inthis position, the slide, or other pressure means, is temporarilyretained to exert continued pressure upon the work, which causes thematerial to which the pressure is applied to conform to the last, andthe upper to be correspondingly urged along the sides of the last. Thepressure-portion of the slide is preferably of yieldable material inlayers, the outer layer being less yieldable than an inner, so itswork-contacting surface will readily assume the contour of the opposedsurface of the last; and the carrier is shown as having means to permitthe work to be presented in different positions to facilitate itsmounting and the application of pressure to it. The pressure upon theshoe-bottom may be resisted not only by the engagement of the last withthe carrier, but also by such a member as a flexible strap extendingfrom said carrier in a loop about the toe of the shoe. Two embodimentsof the invention are disclosed herein, and, in these, the mounting ofthe slide upon the carrier, the connections for the actuating lever, thepressure-retaining means and the work-positioning means assume differentforms.

In. the accompanying drawings are illustrated the two organizationsreferred to above. In these drawings,

Fig. 1 shows, in broken, side elevation, one embodiment of my improveddevice;

Fig. 2 is a vertical, sectional detail on the line II-II of Fig. 1, and

Fig. 3 is a view similar to Fig. l of another arrangement.

Referring to Figs. 1 and 2, we have a yoke-like carrier member Illprovided with two arms, one of which, designated by the numeral I2, isshort and diverges from a second longer arm It. The latter is curvedupwardly over the companion arm. From the juncture of the two armsdepends a spindle I6, which may be received by a socket in a bench, aportion of which is indicated at I8. This pivoted mounting allows thedevice to be turned to different angular positions about a vertical axisto present it and the work operated upon conveniently for the operator.The upper extremity 20 of the arm l2 may be curved convexly and at ornear its center is an outward projection 22 which is preferably shortand rounded. This projection is adapted to enter the spindle-hole of alast as appears at s, this last having upon it a shoe S which is to beoperated upon. As will later be made clear, this engagement between theyoke-arm, its projection and the last permits the latter to rock so itmay better accommodate itself and the work to the pressure which is tobe applied.

The arm Id of the yoke has an extension in the form of a guide member24, which, though it is pivoted to the yoke-arm upon a pin 26, isessentially a portion of the carrier. A vertical adjustment of the pin25, and therefore of the extension 24, may be made by placing said pinin either of two openings 21, 21 in the yoke-arm I l. The purpose ofthis adjustment will be hereinafter stated. The guide member is slottedlongitudinally to receive a slide 28, upon the lower end of which ispivoted at 30 a holder 32. This holder has opposite ways 34 at its underside, in which ways may be inserted a pressure-pad P of yieldablematerial, preferably made up of a plurality of sections of differentdensities. Rubber is suitable for the entire pad, all the sections beingvulcanized together. At 36, we have a layer of relatively dense, hardrubber which has angular projections at its edges entering the ways 35;a second layer 38 may be of quite compressible sponge-rubber; while alayer 40 is of a density between those of the other two, it being firmbut flexible. The yield of the layer 38 allows the pad to conformreadily to the contour of the shoebottom and last, the layer 40 notmaterially resisting this, yet providing a comparatively durablecontact-surface.

To cause movement of the slide 28 with its pressure member, the upperextremity of said slide is engaged by the cam-end d2 of a lever L,having an arm 4% extending outwardly over the yokearm M, where it may begrasped readily by the operator. The lever is fulcrumed between thespaced walls Mi, 4. 6 rising from the extension 2%, a fulcrum-pin 48extending between the Walls. This pin may be inserted in either of twopairs of alined openings 5G, 50, and may be received in either of twodepressions 52, 52 in the camportion 42 of the lever. This mountingserves to so adjust the relation of the cam-end of the lever to theslide that the efiective length of said slide may be varied and the padP caused to have the desired extent of pressure-movement. A leaf-spring5 attached at one extremity to the lever and extending along thedepressions, guards against accidental displacement of said lever fromits fulcrum, yet, .upon sufficient pressure by the operator, permits theshifting of either depression into co-operation with the pin 58. It willbe observed that the cam-portion d2 has a fiat end 56 and this may,merge by curved faces 58 into the opposite parallel side-walls of theportion 42. The curvature at 58 may be about a center which is midwaybetween the two pin positions in the openings 5%. When the lever arm 54is raised to free the slide from the cam, the pad P is elevated to aninactive position by expansion-springs 69, S0, seated in recesses in theextension 2t, and engaging the under face of a plate 6| secured to thetop of the slide. Upon depression of the lever-arm Ml from a normallylifted position, the outer curved face 58 cams the slide smoothly downto urge the pad against the shoe-bottom, engagementof the face 56retaining the elements in their pressure-relation.

There should, of course, be means for resisting movement of thetoe-portion of the shoe S and last s away from the slide 28 and pad Pwhile pressure is applied to the work. For this purpose, I have shown astrap 62 hung by links 63, 63 upon a pin 64 extending across the outerextremity of the extension 2d. This strap, which may be of spring-metal,has a loop 66 covered with leather or other protective material 68, andthrough which the toe of the shoe being operated upon may be passed asit is applied to the yoke-projection 22, it being thus retained againstdownward displacement. The vertical position of the loop may be variedby applying the pin t l to either of two openings ill, it in the links63. The just-described adjustment of the strap and that of theyoke-extension 2 by application of the pin 26 to the chosen one of theholes 2'5, locates these elements to best position the work for theoperation upon it.

It will be assumed that the shank of a shoe is to be formed by thisdevice, and that the adjustments at 21 and H3, and either or both thoseat 50 and 52, have beenmade to properly hold the work for the operationand the elements of the device for the application of the desired degreeof pressure. The lever-arm M is initially thrown up, withdrawing thecam-surface 5% of the lever from contact with the slide-plate 6 i, thusallowing the springs 68 to raise the slide and its pressure-pad P. Theoperator, with the device turned in the socket of the bench Hi to aconvenient angle about the axis of the spindle it, slips the toe of alasted shoe S through the loop 66 and settles the end of the last-coneupon the end of the yoke-arm E2, the arm-projection 22 entering thespindle-hole in the last. The leverarm 14 may now be lowered, thespindle it turning in the bench-socket to adapt the device to themovements of the operator. The outer surface 58 of the lever cams downthe slide, and the layer 40 of the pad is forced against the shoeshank,the holder tilting about its pivot 30. The pad, under the influence ofthe applied pressure, exactly conforms to the shank over the entirecontact-surface and exerts a uniform pressure thereon. At this time, thelast may rock upon the yoke-surface 26 to permit the work to adaptitself in position to the direction of applied pressure. The work may beleft upon the device for the time necessary to obtain the desiredforming effect. Then the lever-arm M is raised to free the slide; thesprings fill elevate the pad P from the work; and the operator removesthe shoe and its last for the performance of the various relastingoperations.

In Fig. 3 of the drawings is illustrated another form of my improvedpressure device. The organizations are very similar, the presentarrangement differing chiefly in the means for pcsitioning the work andfor applying and retaining pressure. The yoke-arm M of the carrier it!has an extension 10 secured rigidly to it, and between this extensionand the adjacent end of the arm a slide 72 is guided for verticalmovement and carries the previously described pressure-pad P. Anactuating lever Zis pivoted to the slide at M and, at its forwardextremity, has a floating fulcrum furnished by a pin 16 passing throughthe upper end of a link 18. The lower end of the link is pivotallyjoined at 86 to a. lever 82, fulcrumed at 34 between opposite spacedwalls 86 of the extension l0. A second lever 88 is fulcrumed at ill]between the walls 86. At 92 the adjacent ends of the levers 82 and 88have toothed engagement to move together. In the lower portion of theextension is a recessllt, one wall of which is furnished by the forwardvertical edge of the slide 12, while the opposite wall 96 upon theextensionis inclined inwardly and upwardly. In the recess, forcedupwardly by a spring 58 abutting against a plate mu closing the bottomof said recess, is a retaining member in the form of a clutch-ball M32.The upper portion of the ball projects between the walls 86, 8% belowthe free end of the lever 88.

The elements are shown in operating relation in the drawings, a lastedshoe S being put under pressure by the lowering by the operator of anarm lfi i of the lever Z. When the operator releases his grasp upon thelever, the pressure is held by the ball m2, which the spring 98 wedgesbetween the slide i2 and the inclined wall 96. The inner extremity ofthe lever 82 is lowered by the pull which the lever l and link 78 haveput upon the connection Consequently, the opposite end of the lever 88is raised above the ball 982. When the pressure-period has passed andthe operator wishes to free the work, he raises the arm 84. Thepivot-pin M first serves as a fulcrum and the link 18 is lowered. Thisturns the lever 82 anti-clockwise, as viewed in Fig. 3, swinging thelever 88 in the opposite direction. Said lever 88 contacts at its outerend with the ball E82, forcing it down against the spring 98. Theretaining effect of the ball upon the slide 12 ceases, and continuedelevation of the lever-arm Hi l, with the connection it as a fulcrum,elevates the pressure-pad P to its inactive position, preparingthedevice for the removal of the shoe which has been operated upon, and theapplication of another upon the carrier. To limit the upward travel ofthe connection when the lever-arm I 04 is depressed, the outer end ofthe lever 82 may engage the under side of a plate I06 secured to one ofthe walls 86. When the lever-arm I04 is lifted to free the work, asurface I08 upon the extension H1 provides a similar stop for the lever82.

In this modification, there is no necessity for the introduction ofpressure-adjustments, and the Work-positioning adjustments may besimplified. I have shown a last-spindle H!) of the usual lengthpivotally mounted at H2 upon a carrierslide H4, this slide being movablein ways upon a short, horizontal arm H5 of the yoke IS. The capacity forhorizontal reciprocation of the slide H4 and the oscillation of thespindle Hfl, combined with the pivotal movement of the padholder 32about its pin 30, as previously described, permits the shank of the shoeS to be correctly located to receive the pressure of the pad P.

Having described my invention, what I claim as new and desire to secureby Letters Patent of the United States is:

1. In a shoe-pressing device, a carrier arranged to support a lastedshoe, a slide movable upon the carrier and provided with a shoe-engagingportion, an actuating lever having a fulcrum mounted upon the carrierand movable by the operator to press the engaging portion of the slideagainst the shoe, and a flexible strap extending from the carrier andforming a loop through which the toe of the lasted shoe may be thrust.

2. In a shoe-pressing device, a carrier arranged to support a lastedshoe, a pressure member movable upon the carrier and provided with ashoe-engaging portion, and an actuating lever having a fulcrum mountedupon the carrier and movable by the operator to press the engagingportion of the pressure member against the shoe, the carrier havingmeans permitting the shoe to rock into different positions toaccommodate itself to the applied pressure.

3. In a shoe-pressing device, a carrier arranged to support a lastedshoe, a slide movable upon the carrier and provided with a shoe-engagingportion, an actuating lever having a fulcrum mounted upon the carrierand movable by the operator to press the engaging portion of the slideagainst the shoe, and a pivotal mounting for the carrier whereby thework and the carrier may be presented in difierent positions for theoperation.

4. In a shoe-pressing device, a yoke having two arms extending oppositeeach other, a slide provided with a shoe-engaging portion and anactuating lever for said slide mounted upon the same arm of the yoke,and a last-engaging projection upon the other arm of said yoke.

5. In a shoe-pressing device, a yoke having two arms extending oppositeeach other, a flexible toe-engaging strap, a slide provided with ashoeengaging portion and an actuating lever for said slide all mountedtogether upon the same arm of the yoke, and a last-engaging projectionupon the other arm of said yoke.

6. In a shoe-pressing device, a yoke, a spindle projecting from the yokefor rotation in a bench, a slide provided with a shoe-engaging portionand an actuating lever for said slide mounted upon one arm of the yoke,and a last-engaging projection upon the other arm of said yoke.

7. In a shoe-pressing device, a carrier arranged to support a lastedshoe, an extension pivoted upon the carrier, a shank-pressing membermounted to reciprocate in the extension, and means movable by theoperator to urge the pressing member toward the shank.

8. In a shoe-pressing device, a carrier arranged to support a lastedshoe, an extension pivoted upon the carrier, 2. shank-pressing membermounted to reciprocate in the extension, means movable by the operatorto urge the pressing member toward the shank, and a spring interposedbetween the extension and the pressing member to retract said pressingmember.

9. In a shoe-pressing device, a yoke, a slide provided with ashoe-engaging portion and an actuating lever for said slide mounted uponone arm of the yoke, and a last-engaging projection upon the other armof said yoke, such projection being formed to permit the last to rockupon the arm, said arm having a curved surface adjacent to theprojection to facilitate the rocking of the last.

10. In a shoe-pressing device, a carrier arranged to support a lastedshoe, a slide movable upon the carrier and provided with a shoe-engagingportion, an actuating lever having a fulcrum mounted upon the carrierand movable by the operator to press the engaging portion of the slideagainst the shoe, and means arranged to permit the efi'ective length ofthe slide to be changed.

11. In a shoe-pressing device, a carrier arranged to support a lastedshoe, a slide movable upon the carrier and provided with a shoe-engagingportion, an actuating lever having a fulcrum mounted upon the carrierand movable by the operator to press the engaging portion of the slideagainst the shoe, and means arranged to permit the fulcrum-point of thelever to be changed.

12. In a shoe-pressing device, a carrier arranged to support a lastedshoe and having a fulcrum-pin, a slide movable upon the carrier andprovided with a shoe-engaging portion, and an actuating lever movable bythe operator to press the engaging portion of the slide against theshoe, said lever having a plurality of recesses any one of which mayreceive the fulcrum-pin.

13. In a shoe-pressing device, a carrier arranged to support a lastedshoe and having openings to hold a fulcrum-pin in different positions, aslide movable upon the carrier and provided with a shoe-engagingportion, and an actuating lever movable by the operator to press theengaging portion of the slide against the shoe, said lever having aplurality of recesses any one of which may receive the fulcrum-pin.

14. In a shoe-pressing device, a carrier arranged to support a lastedshoe and having a fulcrum-pin, a slide movable upon the carrier andprovided with a shoe-engaging portion, an actuating lever movable by theoperator to press the engaging portion of the slide against the shoe,said lever having a plurality of recesses any one of which may receivethe fulcrum-pin, and a spring for normally retaining a chosen recess inco-operation with the pin.

15. In a shoe-pressing device, a carrier arranged to support a lastedshoe and having a unitary portion extending upwardly at one extremity ofand then forwardly above such supported shoe, a slide movable upon thisupwardly extending portion of the carrier and provided with ashoeengaging portion, and an actuating lever having a fulcrum mountedupon the carrier, said lever being provided with an arm for movement bythe operator and with a cam-arm for engagement with the slide.

16. In a shoe-pressing device, a carrier arranged to support a lastedshoe, pressure means movable upon the carrier and provided with ashoe-bottom-engaging portion, an actuating lever having a fulcrummounted upon the carrier and movable by the operator to urge theengaging portion of the pressure means against the shoe-bottom, andlocking means engaging the pressure means.

17. In a shoe-pressing device, a carrier arranged to support a lastedshoe, pressure means movable upon the carrier and provided with ashoe-bottom-engaging portion, an actuating lever having a fulcrummounted upon the carrier and movable by the operator to urge theengaging por tion of the pressure means against the shoe-bottom, lockingmeans engaging the pressure means, and means movable under the influenceof the lever for releasing the locking means.

18. In a shoe-pressing device, a carrier arranged to' support a lastedshoe, a slide movable upon the carrier and provided With a shoe-engagingportion, an actuating lever having a fulcrum mounted upon the carrierand movable by the operator to press the engaging portion of the slideagainst the shoe, a locking member engaging the pressure means, and alock-releasing lever fulcrumed upon the carrier and movable under theinfluence of the actuating lever to engage the locking member.

19. In a shoe-pressing device, a carrier arranged tosupport a lastedshoe, a slide movable upon the carrier and provided with a shoe-engagingportion, an actuating lever having a fulcrum mounted upon the carrierand movable by the operator to press the engaging portion of the slideagainst the shoe, a locking member engaging the slide, and co-operatinglevers fulcrumed upon the carrier, one of said levers engaging thelocking member and the other being connected to the actuating lever tofurnish a fulcrum therefor. 1

20. In a shoe-pressing device, a carrier arranged to support a lastedshoe, a slide movable upon the carrier and provided with a shoe-engagingportion, a lever pivotally connected to the slide, a lever fulcrumedupon the carrier, and a. link joining the two levers.

WILLIAM H. NUTT.

